Hangover tips?

i’m 21F and am new to alcohol. i wasn’t a big drinker in high school and now that i’m old enough i go out to the bars with my friends. this is my 2nd time having a hangover and i really don’t know what to do to make it go away/feel better.

I get massive headaches and my stomach hurts and i have no appetite. when i take medication for my headaches, i tend to throw them up. i need a routine i can rely on to feel better.

Thank you!!